<!-- 用户管理->用户列表 -->
<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span='8'>
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="handleCurrentChange(1)">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span='4'>
          <el-button type='primary' @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" stripe border>
        <el-table-column type="index" lable="#"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope='scope'>
            <!-- {{scope.row}}获取了这一行的数据 -->
            <!-- 状态按钮 -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width=180px>
          <template slot-scope='scope'>
            <!-- 修改按钮 -->
            <el-tooltip class="item" effect="dark" content="编辑" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="small" @click="showEditDial(scope.row.id)">
              </el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-tooltip class="item" effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="small"
                @click="removeUserById(scope.row.id,scope.row.username)">
              </el-button>
            </el-tooltip>
            <!-- 分配角色按钮 -->
            <el-tooltip class="item" effect="dark" content="角色管理" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="small" @click='setRole(scope.row)'></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" status-icon :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="editForm" status-icon :rules="addFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 角色管理的对话框 -->
    <el-dialog title="角色管理" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialgClosed">
      <!-- 内容主体区域 -->
      <div>
        <p>当前的用户：{{userinfo.username}}</p>
        <p>当前的角色：{{userinfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      // 验证邮箱的规则
      var checkEmail = (rule, value, cb) => {
        const regEmail = /^\w+@\w+(\.\w+)+$/
        if (regEmail.test(value)) {
          return cb()
        }
        //返回一个错误提示
        cb(new Error('请输入合法的邮箱'))
      }
      // 验证手机号的规则
      var checkMobile = (rule, value, cb) => {
        const regMobile = /^1[34578]\d{9}$/
        if (regMobile.test(value)) {
          return cb()
        }
        //返回一个错误提示
        cb(new Error('请输入合法的手机号码'))
      }

      return {
        // 获取用户列表的参数对象
        queryInfo: {
          query: '',
          // 当前的页数
          pagenum: 1,
          // 当前每页显示的条数
          pagesize: 5,
        },
        userlist: [],
        total: 0,
        // 控制添加用户对话框的显示与隐藏
        addDialogVisible: false,
        // 添加用户的表单数据对象
        addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        // 添加用户的表单数据的验证规则对象(修改也用的这个)
        addFormRules: {
          username: [
            { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
          password: [
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          ],
          email: [
            { required: true, message: '请输入邮箱', trigger: 'blur' },
            { validator: checkEmail, trigger: 'blur' }
          ],
          mobile: [
            { required: true, message: '请输入手机号', trigger: 'blur' },
            { validator: checkMobile, trigger: 'blur' }
          ],
        },
        // 控制修改用户对话框的显示与隐藏
        editDialogVisible: false,
        // 查询到的用户信息对象
        editForm: {},
        // 控制角色管理对话框的显示与隐藏
        setRoleDialogVisible: false,
        // 需要被分配角色的用户信息
        userinfo: {},
        // 保存的所有角色列表
        rolesList: [],
        // 已选中的角色id
        selectedRoleId: ''
      };
    },
    created() {
      this.getUserList()
    },

    components: {},

    computed: {},

    // mounted: {},

    methods: {
      // 获取用户列表
      async getUserList() {
        const { data: res } = await this.$http.get('users', { params: this.queryInfo })
        if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
        this.userlist = res.data.users
        this.total = res.data.total
      },
      // 监听pagesize改变的事件
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 监听页码值改变的事件
      handleCurrentChange(newPawg) {
        this.queryInfo.pagenum = newPawg
        this.getUserList()
      },
      // 监听switch开关状态的改变
      async userStateChanged(userinfo) {
        const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if (res.meta.status != 200) {
          userinfo.mg_state = !userinfo.mg_state
          return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功')
      },
      // 监听添加用户对话框的关闭事件
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      // 点击按钮，添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async valid => {
          if (!valid) return;
          const { data: res } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) return this.$message.error('添加用户失败！')
          this.$message.success('添加用户成功！')
          // 隐藏用户的对话框
          this.addDialogVisible = false
          this.getUserList()
        })
      },
      // 点击修改按钮修改当前行的用户信息事件
      async showEditDial(id) {
        const { data: res } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('修改失败！')
        this.editForm = res.data
        this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return this.$message.error('请检测你的内容是否正确！')
          const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
          if (res.meta.status !== 200) return this.$message.error('更新失败！')
          // 关闭对话框
          this.editDialogVisible = false
          // 刷新数据列表
          this.getUserList()
          this.$message.success('更新成功！')
        })
      },
      // 根据id删除对应的用户信息
      async removeUserById(id, username) {
        // 触发弹框
        const confirmResult = await this.$confirm('此操作将永久删除用户：' + username + '，是否继续?', 'Warning', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // 如果用户确认删除，则返回值为字符串 confirm
        // 如果用户取消删除，则返回值为字符串 cancel
        if (confirmResult !== 'confirm') return
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除失败！')
        this.$message.success('删除成功！')
        this.getUserList()
      },
      // 展示分配角色对话框
      async setRole(userinfo) {
        this.userinfo = userinfo
        // 在展示对话框之前，获取所有角色的列表
        const { data: res } = await this.$http.get('roles')
        if (res.meta.status !== 200) return
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      // 点击按钮，分配角色
      async saveRoleInfo() {
        if (!this.selectedRoleId) return this.$message.error('请选择你要分配的角色！')
        const { data: res } = await this.$http.put(`users/${this.userinfo.id}/role`, { rid: this.selectedRoleId })
        if (res.meta.status !== 200) return this.$message.error('分配角色失败')
        this.$message.success('分配角色成功')
        this.setRoleDialogVisible = false
        this.getUserList()
      },
      // 分配角色按钮关闭事件
      setRoleDialgClosed() {
        this.selectedRoleId = ''
        this.userinfo = {}
      }
    }
  }

</script>
<style lang='less' scoped>
</style>